CVE-2025-7199: Library System SQL Injection Vulnerability

CVE-2025-7199 Overview

A critical SQL injection vulnerability has been identified in code-projects Library System version 1.0. The vulnerability exists in the file /notapprove.php, where improper handling of the ID parameter allows attackers to inject malicious SQL statements. This flaw enables remote attackers to manipulate database queries without requiring authentication, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data, modify database records, or potentially gain unauthorized access to the underlying system through the /notapprove.php endpoint.

Affected Products

• code-projects Library System 1.0

Discovery Timeline

• July 8, 2025 - CVE-2025-7199 published to NVD
• July 11, 2025 - Last updated in NVD database

Technical Details for CVE-2025-7199

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) affects the /notapprove.php file in the Library System application. The vulnerability is network-accessible, requiring no authentication or user interaction to exploit. The flaw results from insufficient input validation and sanitization of the ID parameter before it is incorporated into SQL queries.

The exploit has been publicly disclosed, increasing the risk of widespread exploitation against vulnerable installations. While the vulnerability allows limited impact on confidentiality, integrity, and availability of the affected system, successful exploitation could enable attackers to read, modify, or delete database records.

Root Cause

The root cause of this vulnerability lies in the improper handling of user-supplied input in the ID parameter within /notapprove.php. The application fails to properly sanitize or parameterize user input before constructing SQL queries, allowing attackers to inject arbitrary SQL commands. This is a classic example of CWE-74 (Injection) where special characters and SQL syntax in user input are not properly neutralized before being used in database operations.

Attack Vector

The attack can be initiated remotely over the network against the /notapprove.php endpoint. An attacker can craft malicious HTTP requests containing SQL injection payloads in the ID parameter. Since no authentication or special privileges are required, any remote attacker with network access to the application can attempt exploitation.

The vulnerability allows attackers to manipulate SQL queries by injecting specially crafted values through the ID parameter. This could include techniques such as UNION-based injection to extract data from other database tables, boolean-based blind injection to infer database contents, or time-based blind injection for data exfiltration. For detailed technical information, refer to the GitHub Issue for CVE-2 and VulDB #315137.

Detection Methods for CVE-2025-7199

Indicators of Compromise

• Unusual or malformed HTTP requests to /notapprove.php containing SQL syntax such as UNION, SELECT, OR 1=1, or comment characters (--, /**/)
• Database error messages exposed in application responses indicating SQL syntax errors
• Unexpected database queries in application or database logs, particularly those accessing multiple tables or containing conditional logic
• Anomalous access patterns to the /notapprove.php endpoint from external IP addresses

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in the ID parameter
• Implement database activity monitoring to identify suspicious queries originating from the Library System application
• Configure intrusion detection systems (IDS) with signatures for SQL injection attack patterns
• Enable detailed logging for the /notapprove.php endpoint and establish alerting for anomalous request patterns

Monitoring Recommendations

• Monitor HTTP request logs for the /notapprove.php endpoint, filtering for requests with special characters in the ID parameter
• Implement real-time alerting for database errors associated with the Library System application
• Review database audit logs for unauthorized data access or modification attempts
• Correlate web server logs with database logs to identify potential exploitation attempts

How to Mitigate CVE-2025-7199

Immediate Actions Required

• Restrict network access to the /notapprove.php endpoint to trusted IP addresses only until a patch is available
• Implement input validation and filtering on the ID parameter at the web server or WAF level
• Consider temporarily disabling the /notapprove.php functionality if it is not critical to operations
• Audit database permissions to ensure the application database user has minimal necessary privileges

Patch Information

No vendor patch information is currently available for this vulnerability. Organizations should monitor the Code Projects Resource Hub for security updates. Given the public disclosure of this vulnerability, implementing compensating controls is strongly recommended until an official fix is released.

Workarounds

• Deploy a Web Application Firewall (WAF) with rules to sanitize or block requests containing SQL injection patterns targeting the ID parameter
• Implement prepared statements or parameterized queries in the application code if source code access is available
• Use stored procedures with proper input validation as an additional layer of defense
• Restrict database user permissions to read-only where write access is not required for the application functionality

Organizations should implement input validation at the application layer. An example configuration for restricting access to the vulnerable endpoint using Apache .htaccess would limit exposure while awaiting an official patch. Consult your web server documentation for appropriate access control configurations.